Entrainment may refer to:

• Air entrainment, the intentional creation of tiny air bubbles in concrete
• Brainwave entrainment, the practice of entraining one's brainwaves to a desired frequency
• Entrainment (biomusicology), the synchronization of organisms to an external rhythm
• Entrainment (chronobiology), the alignment of a circadian system's period and phase to the period and phase of an external rhythm
• Entrainment (engineering), the entrapment of one substance by another substance
• Entrainment (hydrodynamics), the movement of one fluid by another
• Entrainment (meteorology), a phenomenon of the atmosphere
• Entrainment (physical geography), the process by which surface sediment is incorporated into a fluid flow
• Entrainment (physics), the process whereby two interacting oscillating systems assume the same period
• Lexical entrainment, the process in conversational linguistics of the subject adopting the terms of their interlocutor
• Photoentrainment (chronobiology), the synchronization by light of organisms to environment rhythm

Look up entrainment or entrain in Wiktionary, the free dictionary.

• "That's Entrainment", a Van Morrison song
• Entrains-sur-Nohain, a commune in the Nièvre department in central France

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